WiFi direct connection, no gateway required,Remote control via mobile phone 3G/4G/WiFi Crystal tempered glass panel,LED backlight indication at night APP real-time status display,Timer/scene control available Share with family members to control together,Applicable to Amazon Echo and Google Home US standard installation hole distance: 85mm Rated voltage: 100-240V, 50-60Hz Starting method: touch/mobile phone APP Electric life: 100000H Maximum load: less than equal 300W/group Maximum current: 5A Note 1. Only the brightness of the light can be adjusted, not the color of the light (bulbs have this function) 2. Stepless dimming only supports LED lights and tungsten filament lamps 3. The total power of the chandelier group cannot exceed 300W Support unlimited dimming Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Voltage: AC110V Colour:Black Material:Plastic Package Contents: 2x Smart WiFi LED Dimmer Switch